Liquid crystal display device with a light-shielding portion

ABSTRACT

A liquid-crystal display device has a pair of substrates ( 1, 2 ) which are opposite to each other and a semiconductor element which is directly joined to the substrate ( 2 ). A portion other than an active surface ( 12   a ) of the surfaces of the semiconductor element ( 12 ) is covered with a light-shielding member portion ( 16 ). Since the light-shielding member ( 16 ) completely shields light irradiated from the upper and side surfaces of the semiconductor element ( 12 ) and a joint surface between the semiconductor element ( 12 ) and the substrate ( 1 ), the semiconductor element ( 12 ) can be prevented from being erroneously operated.

TECHNICAL FIELD

The present invention relates to a liquid-crystal display device whichcontrols the orientation of a liquid crystal to display visibleinformation. More specifically, the present invention relates to aliquid-crystal display device in which a semiconductor element isdirectly packaged on a substrate constituting a liquid-crystal panel.The present invention also relates to an electronic device on which theliquid-crystal display device is mounted.

BACKGROUND ART

In recent years, liquid-crystal display devices are popularly used invarious devices such as a navigation system, a television set, apalm-top computer, an electronic organizer, and a portable telephone todisplay visible information. As a packaging method of packaging asemiconductor element, e.g., a driver IC, on a liquid-crystal panel inmanufacturing a liquid-crystal display device, a packaging method ofdirectly joining a semiconductor element to one of a pair of substrateswhich are opposite to each other through a liquid crystal, i.e., a COG(Chip On Glass) method, is known. When the COG method is used,reductions in thickness and weight of a liquid-crystal display device,micropatterning of connection pitch, and the like are expected. However,when the COG method is used, a semiconductor element is directly joinedto a transparent substrate by a joining agent such as an ACF(Anisotropic Conductive Film). For this reason, light from a back lightor sunlight may be directly irradiated on the semiconductor elementthrough the substrate. The irradiated light may cause the semiconductorelement to erroneously operate. The following problem is also posed.That is, light irradiated from a portion other than the active surfaceof a semiconductor element passes through the semiconductor element toadversely affect the active surface. As a result, the semiconductorelement is erroneously operated. In order to prevent light from beingirradiated on a semiconductor element packaged on a substrate by the COGmethod, the following conventional liquid-crystal display device isdisclosed in Japanese unexamined Patent Publication No. 1-128534. FIG. 8is a view showing a typical example of a liquid-crystal display deviceof this type. In a metal film forming process step for forming an activeelement on a substrate, a metal film 51 is also formed in a regioncorresponding to an IC chip, i.e., a semiconductor element, and themetal film 51 is used as a light-shielding layer for the IC chip 12.

However, in the conventional liquid-crystal display device, lightirradiated from the upper or side surface of the IC chip, i.e., asurface other than the active surface of the semiconductor element, andpassing through the upper surface of the semiconductor element toadversely affect the active surface of the semiconductor element, andlight being incident from the connection surface between a substrate onwhich the semiconductor element is packaged and the semiconductorelement to adversely affect the active surface of the semiconductorelement are not considered. The light-shielding effect is not perfect.

In addition, in the conventional liquid-crystal display device, alight-shielding layer is consequently formed between the IC chip and thesubstrate. For this reason, a process for reducing a capacitance formedbetween the IC chip and the light-shielding layer, e.g., a process offorming the light-shielding layer as a special pattern must beperformed. However, this process may be complex, and light-shieldingperformance may be degraded because the light-shielding layer is formedas the special pattern.

DISCLOSURE OF INVENTION

The present invention has been made in consideration of the aboveproblems in a conventional liquid-crystal display device, and has as itsobject to provide a liquid-crystal display device, using the COG method,in which light can be prevented from being irradiated on a semiconductorelement by only performing an extremely simple process withoutperforming any complex process.

In order to achieve the above object, according to the presentinvention, a liquid-crystal display device having a pair of substrateswhich are opposite to each other through a liquid crystal, and asemiconductor element which is directly joined to at least one of thesubstrates, is characterized in that a portion of the semiconductorelement other than the surface joined to one of the substrates iscovered with a light-shielding member.

In this liquid-crystal display device, a light-shielding member is notformed between a semiconductor element and a substrate, and a portion,other than the surface joined to the substrate, of the surfaces of thesemiconductor element joined to the substrate is covered with the secondlight-shielding member. More specifically, the semiconductor elementitself is shielded from light by the light-shielding member. With thisarrangement, the light-shielding member arranged to cover thesemiconductor element completely shields light irradiated from the upperand side surfaces of the semiconductor element and the joint surfacebetween the semiconductor element and the substrate, so that thesemiconductor element can be completely prevented from being erroneouslyoperated.

One pair of substrates which sandwich the liquid crystal consist oftransparent glass therebetween. However, if there is no inconvenience onmanufacture, the substrates may consist of another material such as atransparent synthetic resin. As the semiconductor element, for example,a driver IC for controlling a scanning electrode for a simple matrix, adata electrode or a driver IC for controlling a scanning line for anactive matrix and a data line, and the like can be considered. Althougha method of joining the semiconductor element to the substrate is notlimited to a specific method, for example, the semiconductor element canbe joined to the substrate by using an ACF.

The second light-shielding member for shielding light being toward thesemiconductor element may be arranged on a surface opposite to thesurface, to which the semiconductor element is joined, of the surfacesof one of the substrates. Although the second light-shielding membershields light irradiated from the active surface of the semiconductorelement like a conventional light-shielding layer, after thesemiconductor element is joined to the substrate, a light-shieldingmember is fixed to the opposite surface of the substrate. For thisreason, the light-shielding member can be arranged by only performing anextremely simple process without performing any complex process. Inaddition, since the problem of a change in capacitance obtained byarranging the light-shielding member need not be considered, thelight-shielding member can be formed as an arbitrary pattern. Therefore,light can be reliably prevented from being irradiated on thesemiconductor element with sufficient light-shielding performance.

The present invention can be also be applied to a liquid-crystal displaydevice using an active matrix method, or to a liquid-crystal displaydevice using a simple matrix method. The active matrix method is aliquid-crystal display device using a format in which respective pixelsarranged in the form of a matrix have active elements as in a TFT (ThinFilm Transistor) method, a TFD (Thin Film Diode) method, or the like. Onthe other hand, the simple matrix method is a liquid-crystal displaydevice using a formation in which a plurality of pixels having no activeelements are arranged in the form of a matrix between a pair ofsubstrates which sandwich a liquid crystal material therebetween, andincludes a liquid-crystal display device which has a sign pattern inresponse to a function request. The prior art disclosed in JapaneseUnexamined Patent Publication No. 1-128534 is on the assumption that theactive matrix method is used, and a liquid-crystal display device usingthe simple matrix method is not considered. If the prior art is to beapplied to the liquid-crystal display device using the simple matrixmethod, a cumbersome thin-film forming process step is assigned to forma metal light-shielding film in a region corresponding to an IC chip,and cost uneconomically increases.

Therefore, when the present invention is applied to a liquid-crystaldisplay device using the simple matrix method, a remarkable effect canbe obtained. In the liquid-crystal display device using a so-calledactive matrix method, a light-shielding layer, i.e., a light-shieldingmember, for shielding the semiconductor element from light in theprocessing step of forming an active element on a glass substrate can beincidentally formed. However, since the step of forming an activeelement is not performed in the simple matrix method, a light-shieldinglayer cannot be incidentally formed.

As a method of joining a semiconductor element to a substrate, aso-called face-down method which joins the semiconductor element to thesubstrate such that the active surface of the semiconductor element tothe substrate, and a so-called face-up method which joins thesemiconductor element to the substrate such that the surface opposite tothe active surface of the semiconductor element is in contact with thesubstrate are considered. The present invention can be applied to theface-down method of the above two methods. When the face-up method isemployed, a light-shielding member is not arranged to cover thesemiconductor element from the upper surface, but the semiconductorelement is joined to the substrate, and a light-shielding member isfixed to a position corresponding to the semiconductor element on theopposite surface of the substrate. In this case, as in the presentinvention, light irradiated from a surface other than the active surfaceside of the semiconductor element can be shielded.

According to the present invention, various specific examples of alight-shielding member can be considered. For example, since apolarizing plate is fixed to the surface of a substrate in a generalliquid-crystal display device, the size of the polarizing plate is madelarge to extend the polarizing plate to the outside of the effectivedisplay region of a liquid-crystal panel, i.e., a portion where thesemiconductor element is packaged, and the extended portion can be usedas the light-shielding member. Also, a sheet member havinglight-shielding properties is arranged to cover the semiconductorelement, so that the light-shielding member can be constituted. Thelight-shielding member can also be formed such that the surface of asemiconductor element joined to a substrate is covered with a moldingresin. When the semiconductor element is covered with a molding resin,the semiconductor element can be shielded from light. In addition, thesemiconductor element is mechanically protected by the molding resin, orthe semiconductor element can also be prevented from being exposed tohumidity.

As a specific example of the second light-shielding member, thefollowing can be used. That is, like the above light-shielding member,the size of the polarizing plate is made large to extend the polarizingplate to the outside of the effective display region of a liquid-crystalpanel, i.e., a portion where the semiconductor element is packaged, andthe extended portion can be used as the light-shielding member. Inaddition, a sheet member having light-shielding properties may be stuckon the surface, which is opposite to the semiconductor element, of thesubstrate.

In addition, when one light-shielding tape having light-shieldingproperties and flexibility is adhered to the substrate such that thetape is bent around the substrate, the two functions of thelight-shielding member and the second light-shielding member can beachieved by one light-shielding tape. In this case, when a tape materialhaving flexibility and elasticity is used as a light-shielding tape, thelight-shielding tape can be attached to be in tight contact with thesemiconductor element or the substrate. For this reason, the outsidesize of the liquid-crystal display device is not vainly increased, andoperability can be improved.

According to the present invention, an electronic device in which aliquid-crystal display device having a pair of substrates which areopposite to each other through a liquid crystal and a semiconductorelement which is directly joined to at least one of the substrates and amain body having a main substrate for sending an external input signalto the semiconductor element are connected to each other by a connectioncircuit substrate is characterized in that a portion other than asurface, which is joined to one of the substrates, of the surfaces ofthe semiconductor element is covered with a light-shielding member.

The electronic device is characterized in that a second light-shieldingmember for shielding light being toward the semiconductor element isarranged on a surface, opposite to the surface, to which thesemiconductor element is joined, of the surfaces of one of thesubstrates to extend to an outside position of one of the substrates,and the extended portion of the second light-shielding member isarranged to overlap the connection circuit.

In an electronic device such as a portable telephone, it is required toassure the connection reliability of a connection circuit substrate forconnecting a main body to a liquid-crystal display device. In theelectronic device according to the present invention, the secondlight-shielding member is formed to extend to the outside portion of thesubstrate, and the extended portion is arranged to overlap theconnection circuit substrate. For this reason, the strength of theconnection substrate, especially, the strength of the connectionportion, is improved. As a result, higher connection reliability can beobtained. In addition, since the second light-shielding member is usedas a reinforcing member for the connection substrate, the number of newparts for reinforcing the connection substrate does not increase, andmanufacturing steps for the new parts are not required. For this reason,production cost is not adversely affected.

As a specific example of the second light-shielding member, thelight-shielding member used in the above liquid-crystal display device,i.e., a sheet member comprising a polarizing plate and light-shieldingproperties can be directly used.

When a flexible substrate such as an FPC is used as the connectioncircuit substrate, the reinforcing effect becomes more remarkable.

As an example of the electronic device according to the presentinvention, in addition to a portable telephone, a PDA (Personal DigitalAssistant), a personal computer, a car navigation system, and the likeare known.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional view showing a main part of the first embodimentof a liquid-crystal display device according to the present invention.

FIG. 2 is a sectional view showing a main part of the second embodimentof a liquid-crystal display device according to the present invention.

FIG. 3 is a sectional view showing a main part of the third embodimentof a liquid-crystal display device according to the present invention.

FIG. 4 is a sectional view showing a main part of the fourth embodimentof a liquid-crystal display device according to the present invention.

FIG. 5 is a perspective view showing an example of the liquid-crystalpanel portion of the liquid-crystal display device according to thepresent invention.

FIG. 6 is an enlarged view of a main part of the fifth embodiment of anelectronic device according to the present invention.

FIG. 7 is a view showing the fifth embodiment of the electronic deviceaccording to the present invention.

FIG. 8 is a view showing a conventional liquid-crystal display device.

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment

FIG. 1 shows the first embodiment of a liquid-crystal display deviceaccording to the present invention. This liquid-crystal display devicehas a pair of substrates 1 and 2 which are opposite to each other. Boththe substrates consist of, e.g., transparent glass. A stripe-shaped ITO(Indium Tin Oxide) electrode 3 is formed on the inside surface (lowersurface in FIG. 1) of the first substrate 1, and a stripe-like ITOelectrode 4 is formed on the inside surface (upper surface in FIG. 1) ofthe second substrate 2. In this embodiment, the present invention is tobe applied to a liquid-crystal display device using a simple matrixmethod. Therefore, the first substrate 1 and the second substrate 2 arejoined to each other by a sealing agent 5 such that the ITO electrodes 3and 4 are perpendicular to each other as shown in FIG. 5. As well known,pixels for displaying a visible image are formed at the crossing pointbetween the electrodes 3 and 4 in the form of a matrix. Referring toFIG. 1, a liquid crystal is filled in a space R surrounded by the firstsubstrate 1, the second substrate 2, and the sealing agent 5.

As the material of the electrode, any transparent electrode consistingof, e.g., not only an ITO but also a tin oxide (SnO₂), may be used. Asthe shape of the electrode on a display surface, not only a stripeshape, but also a special symbol (i.e., a symbol representing afunction) as indicated by 10 in FIG. 5 may be used.

Polarizing plates 6 and 7 are fixed to the outside surface (uppersurface in FIG. 1) of the first substrate 1 and the outside surface(lower surface in FIG. 1) of the second substrate 2, respectively. Thelight-transmission axes of the polarizing plates 6 and 7 are offset fromeach other by, e.g., 90°. A back light unit 15 is arranged on theoutside (the lower side in FIG. 1) of the second substrate 2. The backlight unit 15 comprises a light-guide plate 8 having an areacorresponding to an effective display region D and an LED (LightEmitting Diode) 9 serving as a light source arranged on the left-endportion of the light-guide plate 8.

An end portion la of the first substrate 1 projects outside the secondsubstrate 2, an IC output terminal 3 a extending from the ITO electrode3 and an IC input terminal 11 electrically connected to the outputterminal of an outer circuit substrate (not shown) are formed on theinside surface of the projection portion 1 a. A driver IC 12 serving asa semiconductor element is electrically and mechanically directly fixedto a surface on which bump electrodes 13 a and 13 b and a circuitpattern are formed, i.e., on the first substrate 1 by an ACF 14 in sucha manner that the so-called active surface 12 a faces the firstsubstrate 1. Of the surfaces of the driver IC 12 joined to the firstsubstrate 1, surfaces other than the surface joined to the firstsubstrate 1 are covered with the light-shielding member 7 a. In thisembodiment, the polarizing plate 7 on the second substrate 2 side isextended to the outside region of the effective display region D, andthe light-shielding member 16 is constituted by the extended portion 7a. The polarizing plate 6 arranged on the first substrate 1 fixed to thedriver IC 12 extends to the projection portion 1 a of the firstsubstrate 1 over the effective display region D, and the polarizingplate extended portion 7 a operates as a light-shielding member on theactive surface side of the driver IC 12.

Since the liquid-crystal display device of this embodiment is arrangedas described above, when voltage application to the electrodes 3 and 4is controlled by the driver IC 12 while light is emitted from the backlight unit 15, a desired visible image is displayed in the effectivedisplay region D.

While the visible image is displayed as described above, part of lightemitted from the back light unit 15 tends to be irradiated on the activesurface 12a of the driver IC 12 through the upper and side surfaces ofthe semiconductor element 12 and the joint portion between the firstsubstrate 1 and the semiconductor element 12. Depending on cases,sunlight passes through the first substrate 1 or passes around the endportion of the first substrate 1. Thereafter, the light tends to beincident on the active surface 12 a through the upper and side surfacesof the semiconductor element 12 and the joint portion between the firstsubstrate 1 and the semiconductor element 12.

In addition, light emitted from the back light unit 15 or sunlight tendsto be directly incident on the active surface 12 a through the firstsubstrate 1. It is not too preferable for the driver IC 12 that light isincident on the active surface 12 a.

In this embodiment, progressing of the light which tends to be incidenton the active surface of the driver IC through the upper and sidesurfaces of the driver IC 12 and the joint portion between the firstsubstrate 1 and the semiconductor element 12 is blocked by thepolarizing plate extended portion 7 a, and the active surface 12 a isshielded from light. The light-shielding member 7 a for shielding thedriver IC 12 from light is constituted as follows. That is, thepolarizing plate 7 quite generally used in the liquid-crystal displaydevice is increased in area, and the polarizing plate 6 is simplyarranged to cover the driver IC 12. Therefore, a specially complexprocessing step need not be performed to arrange the light-shieldingmember 7 a, and the liquid-crystal display device is extremelyeconomical with respect to the number of parts or the number ofmanufacturing steps.

Progressing of the light which tends to be incident on the activesurface 12 a of the driver IC 12 through the first substrate 1 isblocked by the polarizing plate extended portion 6 a, and the activesurface 12 a is sufficiently shielded from light in practice. As aresult, the driver IC 12 can be reliably prevented from beingerroneously operated by light reception. Like the above light-shieldingmember 7 a, the second light-shielding member 6 a for shielding theactive surface side of the driver IC 12 is constituted as follows. Thatis, the polarizing plate 6 quite generally used in the liquid-crystaldisplay device is increased in area, and the polarizing plate 6 issimply fixed to the rear surface of the first substrate 1 when viewedfrom the driver IC 12. Therefore, a specially complex processing stepneed not be performed to arrange the second light-shielding member, andthe liquid-crystal display device is extremely economical with respectto the number of parts or the number of manufacturing steps. When alight-shielding layer is formed between the driver IC 12 and the firstsubstrate 1 as in the prior art, the light-shielding layer must beformed as a proper pattern in consideration of the problems of electriccapacitance or electric insulation. However, the polarizingplate-extended portion 6 a operating as the light-shielding member inthis embodiment can be formed as an arbitrary pattern which can exercisesufficient light-shielding performance. Therefore, the driver IC 12 canbe reliably shielded from light.

Second Embodiment

FIG. 2 shows the second embodiment of a liquid-crystal display deviceaccording to the present invention. In this liquid-crystal displaydevice, a light-shielding sheet member 26 operating as a secondlight-shielding member is adhered to a surface, which is opposite to adriver IC 12, of a first substrate 1 to which a driver IC 12 is joined.In addition, when the surface of the driver IC 12 other than an activesurface 12 a is covered with a resin mold 36, the resin mold 36 is usedas the light-shielding member.

The second light-shielding sheet member 26 can be constituted by aflexible adhesive tape having black or another non-transparent color, anon-flexible adhesive sheet having black or another non-transparentcolor, or the like. In addition, the resin mold 36 can consist of anarbitrary resin material, having light-shielding properties, such as athermoplastic resin or a thermosetting resin.

Third Embodiment

FIG. 3 shows the third embodiment of a liquid-crystal display deviceaccording to the present invention. In this liquid-crystal displaydevice, one adhesive tape 46 having light-shielding properties andflexibility is adhered to a first substrate 1 such that the adhesivetape 46 is bent around the first substrate 1, thereby constituting alight-shielding member 46 a on the substrate side and a light-shieldingmember 46 b on a driver IC 12 side. According to this embodiment, whenthe very simple operation that one adhesive tape 46 is adhered to boththe front and rear surfaces of the first substrate 1 is performed, thedriver IC 12 can be reliably shielded from light. When a tape materialalso having elasticity is used as the adhesive tape 46, the tape can befitted on the driver IC 12 and the substrate 1 in a tight contact state.

Fourth Embodiment

FIG. 4 shows the fourth embodiment of a liquid-crystal display deviceaccording to the present invention. In this liquid-crystal displaydevice, an adhesive tape 47 having light-shielding properties is stuckon a driver IC 12 to cover the driver IC 12, thereby constituting alight-shielding member 47. In the second light-shielding member on thesubstrate side, as in the first embodiment, a polarizing plate quitegenerally used in a liquid-crystal display device is increased in area,and a polarizing plate 6 is simply fixed to the rear surface of a firstsubstrate 1 when viewed from the driver IC 12.

Fifth Embodiment

FIG. 6 is a view showing the details of the connection portion of anelectronic device according to the present invention, and FIG. 7 is aview showing the electronic device according to the present invention.An end portion 1 a of a first substrate 1 projects outside a secondsubstrate 2, an IC output terminal 3 a extending from an ITO electrode 3and an IC input terminal 11 electrically connected to the outputterminal (not shown) of a connection circuit substrate 48 are formed onthe inside surface of the projection portion 1 a. The input terminal(not shown) of the connection circuit substrate 48 is connected to amain substrate 49 for sending an external input signal input from anexternal key 50 to the driver IC 12. The driver IC 12 serving as asemiconductor element is electrically and mechanically directly fixed tothe first substrate 1 by an ACF 14 in such a manner that the so-calledactive surface 12 a faces the first substrate 1. Of the surfaces of thedriver IC 12 joined to the first substrate 1, surfaces other than thesurface joined to the first substrate 1 are covered with the resin mold36 serving as a light-shielding member. The resin mold 36 can consist ofan arbitrary resin material, having light-shielding properties, such asa thermoplastic resin or a thermosetting resin. A light-shielding sheetmember 26 operating as a second light-shielding member is adhered to asurface, which is opposite to a driver IC 12, of a first substrate 1 towhich a driver IC 12 is joined. The light-shielding sheet member 26 canbe constituted by a flexible adhesive tape having black or anothernon-transparent color, a non-flexible adhesive sheet having black oranother non-transparent color, or the like. The light-shielding sheetmember 26 is arranged to stick out of the first substrate, and thesticking portion is stuck on the connection circuit substrate 48 tooverlap it. In this manner, the light-shielding sheet member 26 operatesto reinforce the connection between the connection circuit substrate andthe first substrate.

In this embodiment, the resin mold 36 is used as a light-shieldingmember, and a light-shielding adhesive tape is used as the secondlight-shielding member. However, as the light-shielding member and thesecond light-shielding member, both the light-shielding member and thesecond light-shielding member which are described in the first to fourthembodiments can be used, as a matter of course.

Another Embodiment

The present invention has been described with reference to thepreferable embodiments. However, the present invention is not limited tothese embodiments, and the present invention is variously modifiedwithin the technical range described in the claims.

For example, the present invention is not limited to not only aliquid-crystal display device using a simple matrix method, but also aliquid-crystal display device using an active matrix method. A method ofjoining the driver IC 12 to the substrate is not limited to a methodusing an ACF, and an arbitrary joining method can be employed. As a backlight unit, not only a unit constituted by an LED and a light-guideplate, but also another arbitrary light-emitting means such as an EL(Electro Luminescence) can be used. In each of the embodiments shown inFIGS. 1 to 4, the back light unit 15 is arranged on the substrate 2 sideopposite to the substrate 1 to which the driver IC 12 is joined. Inplace of this arrangement, the back light unit 15 may be arranged on thesubstrate 1 side to which the driver IC 12 is joined.

As the fifth embodiment, a portable telephone is exemplified. However,the present invention can be applied to not only a portable telephonebut also a PDA (Personal Digital Assistant), a personal computer, a carnavigation system, and the like.

What is claimed is:
 1. A liquid-crystal display device comprising: afirst transparent substrate; a second substrate opposing said firstsubstrate, said first substrate including an end portion extendingbeyond an edge of said second substrate; liquid crystal positionedbetween said first and second substrates; a semiconductor elementmounted on an inner surface of said end portion of said first substratespaced apart from said edge of said second substrate so as to form a gapbetween said edge of said second substrate and said semiconductorelement; a backlight unit positioned behind said second substraterelative to said first substrate; and a light shielding memberpositioned over said semiconductor element and extending in a directiontoward said first substrate at least partially into said gap.
 2. Theliquid crystal display device according to claim 1, wherein: saidsemiconductor element has an active surface and another surface oppositesaid active surface, said active surface facing the first substrate; andsaid another surface is covered with said light shielding member.
 3. Theliquid crystal display device according to claim 1, further comprisinganother light shielding member including a polarizing plate positionedon an outer surface of said second substrate.
 4. The liquid crystaldisplay device according to claim 1, further comprising a polarizingplate positioned on said an outer surface of first substrate so as tocover said semiconductor element.
 5. The liquid crystal display deviceaccording to claim 1, wherein said light shielding member furthercomprises an adhesive tape.
 6. The liquid crystal display deviceaccording to claim 1, wherein the light shielding member extends fromthe semiconductor element and is connected to the first substrate in thegap.
 7. A liquid crystal display device comprising: a first substrate; asecond substrate positioned opposite said first substrate, said firstsubstrate including an end portion extending beyond an edge of saidsecond substrate; liquid crystal positioned between said first andsecond substrates; a semiconductor element positioned on said endportion of said first substrate, said semiconductor element including anactive surface facing said end portion, said semiconductor element beingspaced apart from said edge of said second substrate so as to form a gapbetween said semiconductor element and said second substrate; a lightsource positioned proximate said second substrate, the light sourceemitting light toward the active surface; and a light shielding memberpositioned over said semiconductor element and extending at leastpartially between the light source and the active surface to shield theactive surface from light emitted from the light source toward theactive surface.
 8. The liquid crystal display device of claim 7 whereinsaid light shielding member extends into said gap.
 9. The liquid crystaldisplay device of claim 7 wherein said light shielding member extends atleast partially over said gap.
 10. The liquid crystal display deviceaccording to claim 7, wherein said light shielding member furthercomprises an adhesive tape.
 11. A liquid crystal display devicecomprising: a first substrate; a second substrate opposing the firstsubstrate, the second substrate having light transmitting properties andhaving first and second surfaces on opposite sides thereof, the secondsubstrate including a projecting portion projecting beyond an edge ofthe first substrate; liquid crystal positioned between the first andsecond substrates; a semiconductor element having an active surfacefacing the first surface of the second substrate at the projectingportion; and a polarizing plate disposed on the second surface of thesecond substrate and extending along the projecting portion over atleast the entire active surface of the semiconductor element.
 12. Theliquid crystal display device according to claim 11, wherein thesemiconductor element is mechanically fixed to the first surface throughbump electrodes, the polarizing plate extending over all of the bumpelectrodes.